The Audi TT Roadster (8S) 1.8 TFSI S tronic, produced between 2015 and 2018, represents a compelling entry point into the third-generation TT Roadster lineup. Positioned as a mid-range offering, it blended the TT’s iconic styling with a balance of performance and efficiency. This variant aimed to broaden the TT’s appeal, offering a more accessible price point compared to the higher-performance models while still delivering the engaging driving experience the TT was known for. It was built on the Volkswagen Group’s PQ25 platform, also known as the A3/Golf platform (1HX0/A3). The 8S generation marked a significant evolution in the TT’s design and technology, and the 1.8 TFSI S tronic played a key role in its commercial success.
Technical Specifications
| Brand | Audi |
| Model | TT |
| Generation | TT Roadster (8S) |
| Type (Engine) | 1.8 TFSI (180 Hp) S tronic |
| Start of production | 2015 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Roadster |
| Seats | 2 |
| Doors | 2 |
| Fuel consumption (urban) | 7.1-7.3 l/100 km (33.1 – 32.2 US mpg, 39.8 – 38.7 UK mpg, 14.1 – 13.7 km/l) |
| Fuel consumption (extra urban) | 5-5.2 l/100 km (47 – 45.2 US mpg, 56.5 – 54.3 UK mpg, 20 – 19.2 km/l) |
| Fuel consumption (combined) | 5.8-6 l/100 km (40.6 – 39.2 US mpg, 48.7 – 47.1 UK mpg, 17.2 – 16.7 km/l) |
| CO2 emissions | 132-136 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 7.3 sec |
| Acceleration 0 – 62 mph | 7.3 sec |
| Acceleration 0 – 60 mph | 6.9 sec |
| Maximum speed | 237 km/h (147.26 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 7.3 kg/Hp, 136.4 Hp/tonne |
| Weight-to-torque ratio | 5.3 kg/Nm, 189.4 Nm/tonne |
| Power | 180 Hp @ 5100-6200 rpm |
| Power per litre | 100.1 Hp/l |
| Torque | 250 Nm @ 1250-5000 rpm (184.39 lb.-ft. @ 1250-5000 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | EA888 / CJSA |
| Engine displacement | 1798 cm3 (109.72 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 82.5 mm (3.25 in.) |
| Piston Stroke | 84.1 mm (3.31 in.) |
| Compression ratio | 9.6:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection and Multi-port manifold injection |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 5.7 l (6.02 US qt | 5.02 UK qt) |
| Coolant | 9 l (9.51 US qt | 7.92 UK qt) |
| Kerb Weight | 1320 kg (2910.1 lbs.) |
| Max. weight | 1640 kg (3615.58 lbs.) |
| Max load | 320 kg (705.48 lbs.) |
| Trunk (boot) space – minimum | 280 l (9.89 cu. ft.) |
| Fuel tank capacity | 50 l (13.21 US gal | 11 UK gal) |
| Length | 4177 mm (164.45 in.) |
| Width | 1832 mm (72.13 in.) |
| Width including mirrors | 1966 mm (77.4 in.) |
| Height | 1355 mm (53.35 in.) |
| Wheelbase | 2505 mm (98.62 in.) |
| Front track | 1572 mm (61.89 in.) |
| Rear (Back) track | 1552 mm (61.1 in.) |
| Front overhang | 884 mm (34.8 in.) |
| Rear overhang | 788 mm (31.02 in.) |
| Drag coefficient (Cd) | 0.32 |
| Minimum turning circle | 11 m (36.09 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the front wheels of the vehicle. |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 7 gears, automatic transmission S tronic |
| Front suspension | Independent, type McPherson with coil spring and anti-roll bar |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 225/50 R17 |
| Wheel rims size | 8J x 17 |
Powertrain & Engine Architecture
At the heart of the TT Roadster 1.8 TFSI S tronic lies the EA888 engine, specifically the CJSA variant. This 1.8-liter, turbocharged inline-four engine is a cornerstone of the Volkswagen Group’s modular engine family. It features direct fuel injection combined with multi-point injection, optimizing both power delivery and fuel efficiency. The engine utilizes a single-scroll turbocharger with an intercooler, boosting output to 180 horsepower and 250 Nm (184 lb-ft) of torque. The torque band is impressively broad, available from a low 1250 rpm all the way to 5000 rpm, contributing to strong in-gear acceleration. The S tronic transmission is a 7-speed dual-clutch transmission (DCT) known for its rapid shifts and efficiency. It allows for both fully automatic operation and manual gear changes via steering wheel-mounted paddles or the gear selector.
Driving Characteristics
The 1.8 TFSI S tronic offers a refined and accessible driving experience. While not as overtly sporty as the higher-powered TT variants, it provides ample performance for everyday driving and spirited weekend excursions. The S tronic transmission contributes to smooth and quick gear changes, enhancing the overall driving feel. Acceleration from 0 to 62 mph takes approximately 7.3 seconds. The broad torque curve ensures responsive acceleration in most driving situations. Compared to the 2.0 TFSI models, the 1.8 TFSI feels less urgent, but the difference is often subtle in normal driving conditions. The automatic transmission, while convenient, can sometimes feel slightly less engaging than the available manual gearbox.
Equipment & Trim Levels
The 1.8 TFSI S tronic typically came equipped with a generous array of standard features. These included Audi’s Multi Media Interface (MMI) infotainment system with a 5-inch display, automatic climate control, leather upholstery, and 17-inch alloy wheels. Optional extras included upgrades to the MMI system with a larger screen and navigation, a premium sound system, and various interior trim options. Sport seats and a flat-bottomed steering wheel were also available as options, adding a more dynamic touch to the cabin. The interior design was minimalist and driver-focused, characteristic of the TT’s ethos.
Chassis & Braking
The TT Roadster 1.8 TFSI S tronic features a McPherson strut front suspension and a multi-link rear suspension, providing a good balance of comfort and handling. The suspension setup is tuned to offer a sporty yet compliant ride. Braking duties are handled by ventilated discs at the front and solid discs at the rear, equipped with ABS. The steering is electrically assisted, providing precise and responsive control. The car’s relatively low weight (around 1320 kg or 2910 lbs) contributes to its agile handling characteristics.
Market Reception & Comparison
The Audi TT Roadster 1.8 TFSI S tronic was generally well-received by automotive critics. It was praised for its stylish design, refined interior, and engaging driving experience. Fuel economy was also a strong point, with combined figures ranging from 5.8 to 6.0 liters per 100 kilometers (approximately 39-41 mpg). Compared to the 2.0 TFSI models, the 1.8 TFSI offered a more affordable entry point into the TT Roadster range, making it attractive to a wider audience. However, some critics noted that the 1.8 TFSI lacked the outright performance of its more powerful siblings. Against competitors like the BMW Z4 and Porsche Boxster, the TT Roadster 1.8 TFSI offered a compelling combination of style, technology, and value.
Legacy
The 1.8 TFSI engine, in general, has proven to be a reliable unit when properly maintained. The S tronic transmission, while sophisticated, can require more attentive servicing than a traditional automatic gearbox. Common issues include occasional mechatronic unit failures, but these are often covered by extended warranties or can be addressed with software updates. Today, the 8S TT Roadster 1.8 TFSI S tronic represents a well-rounded and stylish used car option. Its combination of performance, efficiency, and modern features continues to appeal to buyers looking for a fun and engaging roadster experience. The car’s iconic design and strong build quality ensure its continued desirability in the used car market.
